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Popular Mechanics Co.

"The Boy Mechanic: Volume 1 700 Things for Boys to Do"

- John E. Mellish.

** How to Make "Freak" Photographs [110]
The "freak" pictures of well-known people which were used by some
daily newspapers recently made everybody wonder how the distorted
photographs were made. A writer in Camera Craft gives the secret,
which proves to be easy of execution. The distortion is
accomplished by the use of prisms, as follows: Secure from an
optician or leaded-glass establishment, two glass prisms, slightly
wider than the lens mount. The flatter they are the less they will
distort. About 20. deg. is a satisfactory angle. Secure them as
shown by the sectional sketch, using strawboard and black paper.
Then make a ring to fit over the lens mount and connect it with
the prisms in such a way as to exclude all light from the camera
except that which passes through the face of the prisms. The inner
surface of this hood must be
[Illustration: Arrangement of Prisms]
dull black. The paper which comes around plates answers nicely. If
the ring which slips over the lens mount is lined with black
velvet, it will exclude all light and hold firmly to the mount,
Place over lens, stop down well after focusing, and proceed as for
any picture.


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